10 
BOTANICAL EXCHANGE CLUB. 
Salix PMsselliana , Sm., fide Leefe. Tweedside, below Trows 
Crags, Koxburgli, May 29 and September 13, 1876 ; June 12, 1877. 
Mr. Leefe, after seeing a specimen, replied:- — “ S. liusseUiana in 
my opinion, tbongli the axis of the aments is more woolly and the 
leaves broader than usual.” S. Ihisselliana, Sm., male and female ; 
PeatingBog, Eoxburgh, May, 1870, and September, 1877. Banks 
of Teviot, near Kelso, Roxburgh, May and September, 1877. 
This without the catkins would pass for alba. I send a series of 
Ihmelliana that have all been seen and examined by the Rev. J. 
E. Leefe, who, as Avill be seen, includes a wide range of forms 
under that name — from very near fragilis on one hand to alba on 
the other. — Andeew Brotherston. 
Salic (sp. ?) Beating Bog, Roxburgh, April, 1876. I send this 
without a name. It seems to have touches of stipularis, Smithiana, 
ferniyinea, but in some important points does not agree with 
any of them. The following are some remarks by Mr. Leefe on 
it : — “ This is a peculiar form, leaves vesemhlmg Jeriityinea, except 
as to stipules, and there is a broad leaf which looks susiiicious of 
something else. The catkins resemble stipularis, but the germeii 
is manifestly stalked. Pedicel sometimes as long as style. Worthy 
of further observation. I do not venture to call it stipularis.' 
After sending fresh specimens of catkins I had the following 
reply : — “ I see I felt some doubt about this when you first sent it 
to me. On the whole I should refer it to stipiilaris." As I wished 
to get his further opinion before sending specimens to B. E. Club, 
I sent more specimens, and he replied: — “The stipules are not 
those of stipularis, Sm., and the ovarium does not appear to be 
sessile : I should name it doubtfully Smithiana, Willd.” — Andrew 
Brotherston. I should call this f err uf/inea . — J. T. Boswell. 
Salic near ruyosa." Bowmont Forest, Roxburgh, May, 1877 ; 
October, 1876. Mr. Leefe says of this: — “I think S. riujosa. I 
have leaves like this from Yorkshire. It varies much in the form 
and length of the leaves.” — Andrew Brotherston. I am quite 
puzzled with this. The very long styles — longer than even those 
of S. ferriaiinea, on the one hand ; and the leaves most like those of 
cinerea in texture, also in the venation and condition of the lower 
surfaces, on the other hand, make up a plant unlike anything 
I have seen. — J. T. Boswell. 
S. Bakeri, Loud. Cat. Cultivated at Balmuto. From Rev. J. 
E. Leefe, October, 1877. — J. T. Boswell. 
Potamoyeton salicif alius, Wolfg., teste Prof. Babington. In the 
Wye, Sellack, Herefordshire, July 15, 1877. The name of this is 
given on the authority of Prof. Babington. I have had it in my 
herbarium ever since 1866, without knowing what to name it. In 
the last and the present year I found it again, and sent it up to 
him. He tells me he feels satisfied that it is the P. salicifolius of 
his ‘ Manual.’ It grows in the Wye in shallow, moderately swift 
water, and though flowering freely, I have been unable to find any 
fruit perfected. — Augustin Ley. 
Najas Jle.cilis, Rostk. Loch Cluny, in 6-12 feet of water, Perth, 
September 2, 1876. The discovery of this plant by Mr. Sturrock, 
